R O Braimah, A T Bakare, A I Yakubu, A O Taiwo, M Bala, O A Fatusi, A Butali, B O Ile-Ogedengbe
{"title":"Psychiatric morbidities and quality of life among surgically treated noma survivors. Preliminary observations in Nigerian cohorts.","authors":"R O Braimah, A T Bakare, A I Yakubu, A O Taiwo, M Bala, O A Fatusi, A Butali, B O Ile-Ogedengbe","doi":"10.1016/j.jormas.2025.102315","DOIUrl":"10.1016/j.jormas.2025.102315","url":null,"abstract":"<p><strong>Introduction: </strong>Facial disfigurement, a sequelae of Noma, has the potential to impact the mental and social well-being of survivors, predisposing them to psychiatric morbidities and low health-related quality of life (HRQoL). The aim of the study is to determine the psychiatric morbidities and QoL among Noma patients in Nigeria.</p><p><strong>Material and methods: </strong>A total of 41 participants were recruited and sociodemographic data were collected. Anxiety and depression, were assessed using the Hospital Anxiety and Depression Scale (HADS), while QoL was evaluated using World Health Organization QoL - BREF. Statistical analyses were performed using SPSS version 25 (IBM SPSS Statistics for iOS, Armonk, NY: IBM Corp). Descriptive statistics was employed alongside inferential analysis using the chi-square test with a significance threshold of p < 0.05.</p><p><strong>Results: </strong>The mean age of participants was 32.5 years (SD ± 12.0). The largest proportion of participants (31.7 %) fell within the 18-24 years age category. Islamic education was the main form of education (65.9 %), and the majority were farmers (61.0 %). The prevalence rates of depression, low quality of life, and anxiety were 73.2 %, 48.8 %, and 73.2 %, respectively. A statistically significant association was found between anxiety and depression (p-value < 0.001). Although anxiety and depression were more prevalent among respondents with a low QoL, this was not statistically significant (p-value = 0.268).</p><p><strong>Conclusion: </strong>The prevalence of psychiatric morbidities (anxiety and depression) is high in Noma survivors, and their QoL is significantly low. Early diagnosis and prompt treatment of mental disorders among Noma survivors is paramount.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102315"},"PeriodicalIF":2.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ricardo Grillo, Wagner Calais, Lázaro Caixeta, Fernando Melhem-Elias
{"title":"Modified wrist pivot method enabling straightforward temporomandibular joint dislocation reduction.","authors":"Ricardo Grillo, Wagner Calais, Lázaro Caixeta, Fernando Melhem-Elias","doi":"10.1016/j.jormas.2025.102317","DOIUrl":"10.1016/j.jormas.2025.102317","url":null,"abstract":"<p><p>Temporomandibular joint (TMJ) dislocation reduction maneuvers can be difficult, even for experienced professionals, as muscle spasms and trismus can impede the process if not addressed promptly and effectively. This technical note presents a modification to the wrist pivot method, making the reduction of mandibular luxation more comfortable and efficient. Gravity assists the reduction, and if it fails, a fulcrum using the thumb wrapped in gauze is introduced, with the second lower molar as support. This technique was successfully tested in eleven cases, all reduced without sedation. The wrist pivot method, known for its efficiency in TMJ reduction, allows for comfortable reductions with minimal force and avoids the need for sedation. This modification simplifies the wrist pivot method, enhances patient comfort, and reduces potential complications and resource usage. It offers a valuable alternative for practitioners, especially where sedation is not an option or resources are limited.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102317"},"PeriodicalIF":2.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maged S Alhammadi, Fady Hussein Fahim, Reem Hassan Kelani, Areej Ali Alsaeedi, Basmah Hakam Mahdi, Najah Alhashimi, Esam Halboub, Abeer A Almashraqi
{"title":"Skeletal, dentoalveolar and soft tissue effects of different maxillary expansion appliances in cleft lip/palate patients: A systematic review and frequentist network meta-analysis.","authors":"Maged S Alhammadi, Fady Hussein Fahim, Reem Hassan Kelani, Areej Ali Alsaeedi, Basmah Hakam Mahdi, Najah Alhashimi, Esam Halboub, Abeer A Almashraqi","doi":"10.1016/j.jormas.2025.102312","DOIUrl":"10.1016/j.jormas.2025.102312","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to assess the available evidence regarding the skeletal, dentoalveolar, and soft tissue effects of different maxillary expansion appliances in cleft lip/palate patients.</p><p><strong>Methods: </strong>We assessed the effects of different maxillary expansion appliances on skeletal and dentoalveolar structures and soft tissues in cleft lip/palate patients. We searched the PubMed, Science Direct, Web of Science, Cochrane, and LILACS databases through September 2024; that investigation was augmented by a manual search. We focused on clinical trials and longitudinal studies, either retrospective or prospective. The outcomes of interest included skeletal, dentoalveolar, and soft tissue changes obtained from study models, cephalometric radiographs, or cone beam computed tomography.</p><p><strong>Results: </strong>Of the 430 screened articles, only six satisfied our eligibility criteria and were included in the quantitative synthesis. These articles exhibited a moderate overall risk of bias. None of the appliances conferred better forward skeletal maxillary movement than the hyrax. The iMini-Molars (iMini-M) was the most effective appliance for increasing maxillary skeletal width (mean: 0.89 mm [range: 0.01-1.78]), with the hyrax following closely behind. The Haas appliance exhibited the largest inter-molar distance (mean: 4.76 mm [range: 2.53-6.99]), followed by the Differential opening appliance (EDO), iMini-M, and the hyrax. The fan-type appliance was the least effective at resisting maxillary premolar tipping (14.46° [2.60-26.32]), and the iMini-premolars (iMini-P) was the most effective at reducing molar tipping (-3.54° [-6.06- -1.02]).</p><p><strong>Conclusions: </strong>Considering the limited number of studies and moderate risk of bias, the iMini-M was the most effective appliance at increasing maxillary skeletal width compared with the hyrax; the Haas achieved the largest inter-molar distance. The fan-type appliance excelled at resisting premolar tipping, and the iMini-P offered the best control for molar tipping.</p><p><strong>Registration: </strong>The protocol for this systematic review was registered at the International Prospective Register of Systematic Reviews (PROSPERO, No.: CRD42023489536).</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102312"},"PeriodicalIF":2.2,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ki67 as a proliferation marker: A study on odontogenic keratocysts and radicular cysts.","authors":"Maurizio D'Amario, Tommaso Pizzolante, Claudio Magnacca, Ilaria Mariani, Mario Capogreco, Ettore Lupi","doi":"10.1016/j.jormas.2025.102313","DOIUrl":"10.1016/j.jormas.2025.102313","url":null,"abstract":"<p><p>Ki67 as a proliferation marker plays a critical role in assessing cellular activity in various pathological tissues, including cystic lesions. Odontogenic keratocysts (OKCs) and radicular cysts (RCs) are two common types of jaw cysts that exhibit distinct biological behaviors, particularly in their proliferative patterns. OKCs are known for their aggressive nature and high recurrence rate, while RCs are typically less aggressive and exhibit lower recurrence risk. By evaluating the expression of Ki67, a nuclear protein linked to cell proliferation, researchers can gain valuable insights into the growth potential and recurrence tendencies of these cysts. The study involved analyzing 32 biopsy samples from patients with OKCs and RCs, using immunohistochemical techniques to assess Ki67 expression levels. These samples were surgically removed and prepared for histological examination, with Ki67-positive cells quantified in both basal and suprabasal layers of the cystic epithelium. The findings revealed that OKCs exhibited a higher concentration of Ki67-positive cells in the basal layers, while RCs showed proliferative activity in both basal and suprabasal layers. This differential pattern highlights the more aggressive proliferative behavior of OKCs. The statistical analysis confirmed significant differences in Ki67 expression between the two cyst types, underscoring the importance of this marker in differentiating OKCs from RCs. The confined expression of Ki67 in the basal layer of OKCs, as opposed to the broader distribution in RCs, suggests that OKCs have a higher proliferative potential, contributing to their increased recurrence rates.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102313"},"PeriodicalIF":2.2,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An innovative corrective method: Reutilization of auricular fistula in microtia reconstruction.","authors":"Yiwen Deng, Jianguo Chen, Ben Wang, Yanlong Yang, Xiaobo Yu, Haiyue Jiang","doi":"10.1016/j.jormas.2025.102311","DOIUrl":"10.1016/j.jormas.2025.102311","url":null,"abstract":"<p><strong>Background: </strong>Auricular fistulas, typically excised due to infection risk, consist of intact skin and soft tissue when uninfected. A large fistula lumen with sufficient tissue coverage over cartilage and no infection during stable periods may be viable for reuse. This article explores using non-infected fistulas as soft tissue sources for microtia reconstruction.</p><p><strong>Method: </strong>Between January 2020 and October 2023, a total of 24 patients diagnosed with concha-type microtia were enrolled in this retrospective study. The correction of ear deformities is achieved by utilizing tissue harvested from the auricular fistulas. Summarize the characteristic information of auricular fistula and the information on postoperative complications of auricular fistula. The ear morphology data(ear length and ear width) collected pre- and post-surgery, along with the Visual Analog Scale (VAS) satisfaction scores and Aesthetic Outcomes Scale(AOS) ear aesthetic evaluations, were assessed for the patients.</p><p><strong>Results: </strong>The mean follow-up duration for this study was 13.1 months.All patients included in this study were diagnosed with concha-type microtia. The auricular fistula was situated in the upper region of the auricle and opened onto the skin surface. The skin tissue surrounding the auricular fistula was abundant, and cartilage was present within the structure of the fistula. Postoperative follow-up indicated the absence of infection, flap necrosis, or any abnormal secretions. The postoperative measurements of ear length, width, and the difference in ear length and width between the two sides were all significantly improved compared to the preoperative measurements. The average preoperative AOS score was 1.2 ± 0.4, and the average postoperative AOS score was 3.6 ± 0.4. The preoperative VAS satisfaction score was 2.1 ± 0.6, and the postoperative VAS score significantly increased to 8.0 ± 0.8.</p><p><strong>Conclusion: </strong>The larger auricular fistula tissue in a stable, non-infected state can be used as a valuable skin source for microtia reconstruction. Utilizing auricular fistula tissue in concha-type microtia correction enhances the auricular aesthetics, reduces secondary local trauma, and improves patient satisfaction with the surgical outcome.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102311"},"PeriodicalIF":2.2,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characteristics of skeletal Class II adolescents with favorable facial attractiveness outcomes based on 3D photos after Twin-block treatment.","authors":"Jieqiong Hu, Chunhong Wang, Qingyi Li","doi":"10.1016/j.jormas.2025.102310","DOIUrl":"10.1016/j.jormas.2025.102310","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to investigate the hard tissue and soft tissue characteristics related to favorable facial attractiveness outcomes of Class II Twin-block treatment to select suitable patients for this therapy.</p><p><strong>Material and methods: </strong>A total of 86 skeletal Class II patients who had undergone Twin-block treatment were included in this study. Post-treatment facial attractiveness was assessed by seven orthodontists using visual analog scale (VAS) scores based on 3D photographs. Patients were ranked according to their VAS scores, with the top 26 individuals classified as the favorable group and the bottom 26 as the unfavorable group. Soft tissue and hard tissue measurements were obtained from their 3D photos and lateral cephalograms, and intergroup comparisons were conducted using the independent t-test and Mann-Whitney test.</p><p><strong>Results: </strong>The favorable group exhibited significantly lower values for Co-pog, FH-MP, L1-APog, Li-H Line, and Total Convexity Angle before treatment, according to independent t-tests and Mann-Whitney tests. Conversely, the favorable group demonstrated significantly higher values for the Wits appraisal, Pog-NB, S-Go/N-Me, Si-H and Ch_R-Li-Ch_L were larger(P < 0.05).</p><p><strong>Conclusions: </strong>Patients with low divergent skeletal patterns, a well-developed chin, upright lower incisors, a flat lower lip, and a large amount of skeletal discrepancy between the maxillary and the mandibular are likelier to achieve favorable facial attractiveness outcomes following Twin-block treatment.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102310"},"PeriodicalIF":2.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143588354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Submental island flap reconstruction in oral cavity cancer patients with pathological level I lymph node metastasis: Flap site recurrence and survival analysis.","authors":"Donyarat Ruenmarkkaew, Orapan Sangiamporn, Hanpon Klibngern, Tapanut Ariyanon, Weerachai Watcharatsiriyuth, Pichit Sittitrai","doi":"10.1016/j.jormas.2025.102309","DOIUrl":"10.1016/j.jormas.2025.102309","url":null,"abstract":"<p><strong>Objectives: </strong>The study aimed to determine flap site recurrence rate in oral squamous cell carcinoma patients who had undergone reconstruction with submental island flap, to evaluate factors affecting flap site recurrence, particularly pathological level I lymph node status, and assess survival outcomes.</p><p><strong>Methods: </strong>Fifty-six patients with squamous cell carcinoma of the oral cavity who underwent surgical resection and submental island flap reconstruction between October 2012 and February 2024 were enrolled onto the study. Tumor recurrence and survival outcomes were analyzed. A Kaplan-Meier estimate of locoregional recurrence-free survival (LRRFS), disease-specific survival (DSS), and overall survival (OS) was calculated. Factors affecting flap site recurrence and survival outcomes were assessed.</p><p><strong>Results: </strong>Most patients (78.57 %) were in the advanced stage (stage III-IV), and 21.43 % had pathological level I lymph node metastasis. Flap site recurrence rate was observed in 5.36 % of cases, without any identifiable factors predicting the recurrence, including pathological level I lymph node metastasis. The 5-year LRRFS, DSS, and OS rates were 60.28 %, 84.55 %, and 67.38 %, respectively. Positive resection margin, perineural invasion, and extranodal extension adversely affected LRRFS.</p><p><strong>Conclusions: </strong>Submental island flap reconstruction in selected oral squamous cell carcinoma patients is oncologically safe regarding low flap site recurrence rate, satisfactory survival outcomes, and pathological level I lymph node metastasis did not affect the flap site recurrence.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102309"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143568850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"3D model construction and biomechanical analysis of temporomandibular joint disc perforation based on arthrography.","authors":"Yichun Wang, Wentong Gao, Jie Lu, Xia Lan, Jie Xu","doi":"10.1016/j.jormas.2025.102308","DOIUrl":"10.1016/j.jormas.2025.102308","url":null,"abstract":"<p><strong>Objectives: </strong>Disc perforation (DP) is a severe type of temporomandibular joint (TMJ) disorder. Arthrography-assisted CBCT can visually detect the location and size of DPs. This study aims to use imaging modeling software to construct a three-dimensional (3D) visual model of DP, simulating its biomechanical impact on the TMJ to provide a scientific basis for diagnosis and treatment.</p><p><strong>Materials and methods: </strong>TMJ imaging data were obtained through arthrography and CBCT scans. Imaging modeling software was used to reconstruct and measure the DICOM files in 3D. The model was imported into biomechanical analysis software to simulate the static occlusal state of the mandibular muscles on the TMJ. The effects of DP on the mechanical properties of the TMJ were assessed via von Mises stress and total deformation analysis.</p><p><strong>Results: </strong>(1) The maximum von Mises stress (MVMS) on the affected side of the disc was significantly greater than that on the unaffected side. This stress was negatively correlated with the height of the condylar head and positively correlated with the perforation volume. (2) The maximum total deformation (MTD) of the affected side's disc was significantly greater and negatively correlated with the condylar head height. (3) The MVMS of the condyle was markedly greater on the affected side than on the unaffected side.</p><p><strong>Conclusion: </strong>(1) DPs may increase stress on bilateral TMJs, with the affected side experiencing significantly greater stress. (2) A larger perforation volume can result in greater stress on the affected side's disc. (3) The height of the affected condylar head can have an adverse effect on the stress and deformation of bilateral TMJs.</p><p><strong>Clinical relevance: </strong>TMJ arthrography can assist clinicians in accurately determining the location, morphology, and size of the disc perforation, enabling early diagnosis and intervention to prevent further enlargement. Additionally, the restoration and protection of the condylar head height contribute to maintaining the stability of the intra-articular stresses within the TMJ.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102308"},"PeriodicalIF":2.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143574463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impaction of third molars and localized cancer of the oral cavity: A simple occasional finding? A retrospective case series and literature review.","authors":"Matteo Zotti, Rossana Bussani, Michele Maglione","doi":"10.1016/j.jormas.2025.102307","DOIUrl":"10.1016/j.jormas.2025.102307","url":null,"abstract":"<p><strong>Objectives: </strong>The aim of this study is to analyze, through a literature review and the description of four clinical cases, whether prolonged tooth impaction may represent a trigger for the onset of oral carcinoma.</p><p><strong>Materials e methods: </strong>In this report, four cases of patients needing the extraction of third molars in complete mucosal or bone impaction are described, which, due to the presence of an unusual radiographic and/or clinical aspect, were found to represent cases of oral carcinomas on histologic analysis. Patients were then referred to the ENT department for further care. A review of the literature has been performed as well.</p><p><strong>Results: </strong>Literature analysis revealed the presence of only few case reports on the topic, suggesting therefore a lack of evidence on the correlation between tooth impaction and the onset of oral carcinomas.</p><p><strong>Conclusions: </strong>Further studies are needed in order to give valid hypotheses. The concept of inflammation, that is at the base of oral carcinogenesis mechanism and tooth-related pathologies, such as pericoronitis, may be a common substrate to link these two phenomena.</p><p><strong>Clinical relevance: </strong>A thorough analysis of the radiographic and clinical signs is strongly recommended prior and during surgical procedures, such as tooth extraction.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102307"},"PeriodicalIF":2.2,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143568359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of accuracy between two different drill designs for static computer-assisted implant surgery: An in vitro study.","authors":"Mengyun Mao, Ting Wei, Mingxing Fan, Haisong Pan, Fudong Zhu","doi":"10.1016/j.jormas.2025.102303","DOIUrl":"10.1016/j.jormas.2025.102303","url":null,"abstract":"<p><strong>Background: </strong>Although several different design methods have been proposed, limited research is available regarding how design features impact accuracy and performance. The purpose of this study was to compare the accuracy of implant site location between two different drilling systems for static computer-assisted implant surgery (sCAIS) in vitro study, each featuring a unique drill stabilization configuration.</p><p><strong>Materials and methods: </strong>Sixty models were fabricated simulating a patient with maxillary partial tooth missing. Each model included two single-tooth gap (STG) situations; two extraction socket sites; and a distal extension situation. Experimental models were categorized into two distinct groups, group A: a sleeve-in-sleeve system with a metal sleeve embedded in the surgical guide; group B: an integrated sleeve-on-drill system without a metal sleeve. The deviations in shoulder, tip, depth, and angular were measured. Date were analyzed using the Scheirer-Ray-Hare test (P ≤ 0.05).</p><p><strong>Results: </strong>The deviation of shoulder, tip and angular in group B were significantly lower than group A. When using an integrated sleeve-on-drill system, the remaining deviation values in extraction sockets were significantly higher than those in the STG situation and the distal extension situation, with the exception of depth deviation. However, there is no significant difference between STG situation and distal extension situation.</p><p><strong>Conclusion: </strong>In comparison to the sleeve-in-sleeve system with a metal sleeve in the surgical guide, the accuracy of an integrated sleeve-on-drill system without a metal sleeve was higher. The accuracy of implantation in extracted sockets was significantly lower than that in healing sites.</p>","PeriodicalId":56038,"journal":{"name":"Journal of Stomatology Oral and Maxillofacial Surgery","volume":" ","pages":"102303"},"PeriodicalIF":2.2,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143506301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}